Fastener



Nov. 23 1926.

A. F. JOHNSON FASTENER Filed Jan. 22. 1924 2 Sheets-Sheet 1 lTd/iJYi/ZOPI flqredFJoz/ffwon a a wa w y efliifys Nov. 23, 1926. 1,608,177

A. F. JOHNSON FASTENER Filed Jan. 22, 1924 2 Sheets-Sheet 2 17121621302 cflZ fredFJoFziwson g Emu- MW M wigs.

Patented Nov. 23, 1926.

UNITED sTAfrss PATENT'OF RICE.

ALFRED F. JOHNSON, OF SOMERVILLE, MASSACHUSETTS, ASSIGNOBL TO CARR FAS- TENEB COMPANY, OF CAMBRIDGE, MASSACHUSETTS, A CORPORATION OF MAINE.

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Application filed January 22, 1924. Serial No. 687,734.

This invention aims to provide an improved separable though not exclusively useful in securing a carpet and the like to a floor.

In the drawings, which illustrate a preferred and two modified forms of my invention: I

Figure 1 is a plan view of a portion of a rug or carpet showing the preferred form of fastener in dotted lines;

Fig. 2 is a section onthe line 2--2 of Fig.

Fig. 3 is an elevation of the socket as viewed from the under side of the rug or carpet;

Fig. 4 is a plan view of the socket from the attaching side thereof;

Fig. 5 is a side elevation of the preferred form of socket;

Fig. 6 is a plan view of a modlfied form of fastener, showing the parts thereof in dotted lines;

Fig.

Fig. 8 is an elevation of the socket shown in Figs. 6 and 7, as viewed from the bottom of the carpet;

Fig. 9 is an elevation of the socket, shown in Fig. 8, as viewed from the attaching side thereof; and

Fig. 10 is an elevation of a second modified 'form of socket, as, viewed from the bottom of the carpet.

Referring to Figs. 1 through 5, which illustrate the preferred form of my invention, I have shown a socket having a body 7 is a section on the line 7-7 of Fig.

made in one piece and providing an outer wall 1 having extending therefrom a pluralitg of prongs 2 and providing a stud-receiving aperture 4 preferably surrounded by an inner wall 3 presenting a substantial width to the neck of the stud when engaged therein and contributing to the strength of the socket body without impairing the resiliency thereof.

To permit expansion and contraction of the socket when engaging or disengaging a stud, I have provided a slot 5 which extends from the stud-receiving aperture 4 to the outer periphery of the socket. This slot 1s preferably straight and'radial, as illustrated, because a straight radial slot is 'slmple and cheap to manufacture and because for the present purposes a radial slot is as efficient as any other form of slot. The socket body fastener, particularly.

weft threads of the carpet web, after the general manner described in the copendin application Serial No. 687,751, filed herewith, of Fred S. Carr.

The combination of this attaching means with a socket, the casing of which is ex ansible and contractible as a whole, is pecu iarly advantageous in that the prongs do not to any appreciable extent interfere with the resiliency of the socket.

As the socket casing expands and contracts to receive and release the stud, the prongs are free to move with the socket casing, this movement being so limited in extent that the flexible warp and weft threads of the carpet present no appreciable resistance and are not to any extent strained.

Under disengaging strains from certain directions the socket may even spring more or less in a direction transverse to its general plane, with accompanying resilient twist of the socket casing, but even under this strain" the prongs and the web with which they are engaged will not appreciably oppose such effective expansion of the socket casing as will release the stud.

The preferred form of stud shown in the drawings provides a head 7, neck 8 and base flange 9 in one piece, the base flange 9 adapted to seat against the floor 10. The stud has a central depression 11 in the head thereof, and an aperture therethrough to permit passage of the screwl2, which secures the stud to the floor 10. The head 13 of the screw is seated in the depression 11 with its outer surface below the outer surface of the head 7 of the stud.

When the stud and socket are engaged, the base of the socket rests upon the base flange 9 of the stud and the inner wall 3 resiliently grips the neck of the stud. ,S eparation of the socket from the stud may be readily eflected by lifting one edge of the carpet adjacent the socket, this causing the ring-like member to be expanded by the camming action of the socket against the side of the stud and permitting the socket to tip out of engagement with the stud.

In the modifiedt form of my invention ilform. The only difference between the preferred socket and this modified form of socket is in the part that grips the neck of the stud, this difference being rimarily in that there is no substantial wldth to that surface of socket which engages the neck of the stud. A portion of the face of the socket closely adjacent the stud-receiving aperture 4 is curved slightly inwardly and the relatively narrow edge or wall 14 thereof engages the neck of the stud when. engaged with the socket.

The stud illustrated in connect-ion with the modified form of socket is substantially the same as that shown and described in United States Patent No. 1,335,220, issued March 30, 1920, to Carr Fastener Company, assignee of Moses F. Carr.

The second modified form of socket, as

illustrated in Fig. 10, is generally the same as that shown in Figs. 6 through 9, except that the stud-receiving aperture 4 is eccentrically located in the face of the socket, the aperture being nearer that side of the body which is split. Thus the resilient ring provided by the body of the socket is narrower adjacent the slit than at points further removed therefrom. This distributes the resiliency about the ring somewhat more evenly than in those forms of my invention where the stud-receiving aperture is concentric; but for ordinary purposes I prefer the centric arrangement:

While I have shown and described preferred forms of my invention, it will be understood that changes involving omission, substitution, alteration and reversal of parts, and even changes in the mode of operation, may be made without departing from the scope of my invention, which is best defined in the following claims.

Claims:

1. A carpet fastener socket including a body, said body presenting a stud-receiving aperture and resiliently expansible and contractible as a whole to permit a cooperating stud to be entered in and withdrawn from said aperture, and a plurality of prongs integral with said body and upstanding therefrom for engagement with the web of a can pet, whereby the desired expansion and contraction of said body will not be interfered with by the attachment thereof to the carpet.

2. A carpet fastener including a socket having a ring-like member, said member having a stud-receiving aperture therein, a slot across said member at one sideto permit expansion and contraction thereof when en- 1,eos,177 I with said socket from that side of t e carpet to which the socket is secured.

3. A separable fastener socket presentin an outer annular peripheral wall, a plura ity of attaching prongs presented b said peripheral wall, an inner. annular wal surrounding a stud-receiving aperture, saidinner wall of substantial width and adaptedto engage the neck of a stud, and a slot in said socket to permit expansion and contraction of said socket as a whole.

4. A carpet fastener socket comprising a contractible and expansible split ring having upwardly projecting walls at its outer and inner peripheries, and a plurality of pron extending upwardly from said outer peri E eral wall, said prongs piercing the wa and weft threads of a carpet or the like and thereafter bent outwardly and downwardly thereby piercing the carpet a second time to secure said socket to said carpet, said prongs concealed from view by the pile of the carpet.

5, A separable fastener socket comprising a one-piece body having a stud-receiving aperture therein, said body generally ringshaped and split at one side to permit expansion and contraction of said body as a whole during engagement and disengagement of the head of a cooperating stud, said stud-receiving aperture eccentrically located in said body in a direction toward that side thereof which is split, thereby to provide a body having its maximum strength and greatest width at the side opposite the slit where the greatest bend occurs during expansion of the socket.

6. A separable fastener comprising a socket having a ring-like casing presenting a stud-receiving aperture surrounded by an upwardly projecting resilient wall for resilient engagement with a stud and a plurality of prongs extending upwardly from said casing to secure said socket to a suitable support, said prongs being free to move laterally relative to each other with adjacent portions of said casing and without any appreciable resistance from the carpet when said casing expands and contracts and a stud adapted to enterinto engagement with said socket from that side of the carpet to which the socket is secured.

7. A carpet fastener socket comprising a one-piece ring-like casing substantially U- shaped in cross-section and providing astudreceiving aperture surrounded by a stud-engaging wall adapted to yield laterally and a plurality of attaching prongs extending upwardly from said casing, said prongs piercing the warp and weft threads of the carpet and thereafter bent downwardly into engagement with the warp and weft threads and concealed by the pile of the carpet.

8. A fastener socket comprising, in combination, a one-piece stud-receiving element presenting a ring providing a stud-receiving aperture and having upturned inner and outer flanges and a relatively narrow face portion between said flanges, said ring slit to permit enlargement of the aperture during entrance and removal of the stud, the portion of said wall connecting said inner wall and said face portion curved to present a stud-guiding cam surface to facilitate entrance of the stud and expansion of the studreceiving element.

9. A fastener socket comprising a onepiece casing secured to a socket-carrying support, said casing providing at one side a generally S-shaped cross-section, the upper portion of which provides an attaching part, the middle portion providing a supporting wall and the lower portion providing a wall surrounding a stud-receiving aperture for resilient engagement with a cooperating stud.

10. A separable fastenercomprising, in combination, a socket casing having a studreceiving aperture therethrough, a casing surrounding said aperture being substantially u-shaped in cross-section, the free edges of the U terminating in substantially the same plane and the bottom portion of the U providing a generally curved studguiding cam surface, said casingproviding a laterallyyieldable wall surrounding said aperture and a plurality of attaching prongs extending upwardly from said casing, a cooperating stud having a head of larger diameter than the normal diameter of said stud-receiving aperture, said head being adapted to be guided into said aperture by said stud-guiding cam surface thereby to engage and expand said yieldable wall so that said stud and socket may be engaged.

In testimony whereof, I have signed my name to this specification.

ALFRED F. JOHNSON. 

